Fire-extinguisher.



T NI. DUNLAP. FIRE EXTINGUISHER. APPLlcATloN msn JUNE 8.1914.

Patented June 6 THEODORE M. DUNLAP, 0i? CHC .ASSIGIIOR TO HARRY NEEUBY.

FI?? EEXTlN GUISHER.

l INSHT@ Vl li- :i i-.fi Uh #itimx nl' lli@ completo duim pun m .ivnlpinne in licated by (he lino L-l., Figi. *2. Fig. in a. longitudinalsection on fin?. lin. Vil, Fig. Fig. 3 is n exterior l 2 w of ill@ @muliand adjacent parts. Pig. l is .1` -`avrtiomxl detail on filo line4----1, Fig. Fig. 5 il trnnsvea'w #sinon of tival l um? Showing the Theowing l is; in of :l size mail tlm held in om'. lmml, miner orreuei'rmfle liquid nml. zxlo n@ lw i ating lncclmnirfzn. l if. Gnd bycan t! and it the .lL-1r um.

nn .fixe .line

lli@- Patented .inne 19H3.

.nifl T 'Ln vnnblv tlm Vim'. liver liquid irropoo oi lnn zlm'ice 1Eln'lI sind .nnounL of liquid winni Tube is viomnfxlofl :it f y .lrnnnion 8 Supported in n platee my 3. At the otllcv and il 'if 'my lli@nlw ll the loifwcml nini 2;: x'ozilnble in lw Stalin: j A umnl. "-:l oflli@ nipple 3i). :unl lli? idling lf um l'. iylw wm' engl tulle li-i fo,.mfln.n "i n, howling l5 wliivli.y 'with iff; paws. Seivcs lo pi'ovffnlilw tails@ ng 5V one 9nd 9 new' ffm.: mm., homing l5 and pro viaiwl .YllWn valve Seals 19 :mil C. mln, "11 mounted upon :1 stem "L ,in pf Sitlonlo cooperate with sniff! *zilver 'senin unil to close. one when the.other @non Wlwn tlm mlvp is in intermedlzn'@ position. as; shown inFig. 1. both of the wlw, Seats are open. Stem 2.22 is pvoted anun a pinlwitln the. housing 15 and is provided. with f: .vcigl'i 2G 'which tendsto always hold :will homing und tlv@ stm QQ vertical. Tim;

im; tlcdouille tendency of holding the in mi 6. 'i' itlcnl with theiriciwfivmg;

in inwvrrnnst position, :ml nl? hohl ll Svnted upon til@ Soni' .vlxivl'xits lon-.poz'miy uppermost. Housing; 15 ci; f'laewvl :zml communicateswith 'alle if'. if@ :ind 20 .mil with trnnnion tnlon il. iw? .'lwQxingnishng; lqnlll mm' lne L mail@ 1l through either branches L" a! ingmm? .tiiig'inshiiig liquid is At the foriva rd end tube fi delivers intoa pump easing 3l) wliirlihas a delivery dus. 31 leaning through theforward cap 2. In the preferred forni of pump which I have Seleited toillustrate the invention. the oxioi'ized through the easing lili :i pairof iiiteritiing iiunip z freais 33, lil mounted on Shafts ill. ."5iournaled in raid casing'. AXeeoriling to the present design. haft Sidriven ljv a xepur yinion 36 diiieii lif an internijillv toothed gearwheel Sn'. ii it blioivn in lli-foi. 2. l and (l, (ieai' 'l VI l I* l o*is4 siiliiied upon the main eraoli allait 110,

inl heat Shown in Figi. il, Shaft lil is driven lilv a hand crank il mithe outside of the easing, Said `shaft. passing ont through a stallingbox Jl. iloeed liv a Stalling liox nutl l-l. Shaft 4() is not onljvvrotatable lait is: longitudinally ii'iovalile; and liv reason of thelatter oharateiiatiif is eapalile of neatq ing upon and leuning thevalve Seai'i 46 l'orined in pump easinglfl at the inner end of shaftall). as Shown in Fig'. 1?.. `Valve .feat -lll izmiti'olsy the duet 4Swliii-h lea-'le troni the interior ot' the piiiiiii canina' to thedieliaig'r duet or nozzle l.

The movement ot the main shaft -l-ll toward and from wat L'lllautiaiiatie, and the nieolianiiini for areoiiiiilisliiivgy this movementwill now he doei'zriliril, i

The huh 50 of the rank rl-1 has a groove 51, liest shown in Fig. (l, lnthe main7 this groove is annular with its, plane perpendii'iilar to theaxis oi the shaft. At one point, however7 it has a hraneh 52. ln thepreferred forni the iiraneh `groove ieinters the groove 51 thuspermitting the crank to he rotated iii either direction 'from thenornial Closed position shown in Figs. 2 and il. ll'hen the groove 52 isrontrant. it foi-nis a rain 56 for holding the shaft. in elosed position. A bracket 54 is fastened to the side et the easing and the nose olthe limi-het extends into this groove. LX spring 533 in` teiiiiisedbetween nut flil find the i alle. of the liiili 5l) and this has a`jsoiialant tendency to lorie the end of Shaft ,l0 awa).i troni its Seat46. and to cause the rione-o1 liiaelret 5l to tiavel in the straighta-iiiiilai `move 51. lint when the user is tlii'mig'li with the, de"i'iire and wishes to Close the. duri'y 1P.. lie prennes, inward on huh5l). at the une time rotating it and thus rousing tl nose ot' theliraeliet :il to enter the li'iiiiih lgroove 5'2. fis .soon aa llii`rain Si? haaA i "am opposite to nose. 54, as shown iii Fia'. the userStops rotatingi the rank and than ifaiie hrm-liet 54 acting' on ifani 3Vlo ieliin vii t't 4l) elosed iigfainat the sii-at lin opio-,limo :o theforro ot springi (')hviiiiilQ/v. as; :zoon as thiA aser rotates'y theCiani tlierziftei (in either di rigi'tionl they liraiiiet will passli'oni the liraueh Si! to the niaiii ,groove 51 and peiiiiit the shaftil() to gliit't to open iioitioii.

l havel i'roviiletl iiieanr. for admitting air to talie the plaee ofsuch liquid as may have heen discharged from the device. This will nowlie described:

A valve easing (l0 mounted in ine side of the niain eaeing 1 near shaft40, as liest shown in Fig. i?. A Cheek valve 61 is preferalilv providedwithin thin easing and retained liv a retainer C2. Valve 61 seatsagrainet the valve easing (l0 and prevents liquid troni escapingii whensaid valve easingr is siihnierged. Said valve. however, is i'aiial/-leol' iieriiiittingi air from the outside to enter at an;v time when thepressure. within the iiiaiii easing falls helow atmosphei'if' pressure.fin auxiliary valve (il is pivoted to the main raming 1. as Shown inFig'. L). and is operated hv a liranrh grooveJ (in foi-ined iii the huh.30 of the erank 41. (lioove (56 is similar to groove 59, and isiirefeimliliy onen .at iaith ends to annular groove .61. The operationis iaieli that When the rranlir is rotated troni normal Closed position.shown in Figs. and (l. the Stem of valve (il will enter the Straightportion fil of the groove and {ieriiiit Said valve (il to reniaiii onen.A ,r a result ol the auxiliary valve, il-i tfialeiivj.' to leakage whenthe deviie is .mit ii; :me is prartically eliminated.

ln operation. let it he assumed that the raising is zziiliataiitiall;Yfilled with tire eX- tingiiiwiaiigfj liquid and that the parte are innormal rima l position :flaw 'ii ir .eilraivings, )iai soon osi the i: lr lr uw to rotate the eraiilvlianilli: he Palms i ,ili e 1? iiiatieallyopen an l dializ i') "i: ..lt in the direi'tion to open ui the ssagge-l'l He siniiiltaneonsh7 siii-le the piiiiilfi gears going and tliiatorres lidiii t through the duct 31. After this oi." ti-iii me lis-eneontiniied for Sonie time, ine (,iiaiitity oi' liquid remaining in theniain 'faang will iediiied. and if the deviie is held` at an "l 'neliquid will gather at one end or of the easing. Owing to the faet toatube 5 with its liranelies t3 and 7 is rotatable. and i weighted insueli nianner that the receivin;i nioiitlis of said hranelies willalways hangdownward. one or the other ot Said liv-anch@ will remainsubmerged so long as there is any liiiiii left. ll the rear end of thedeiiee is lows-rit. the mouth of branch 6 will he salama-ged. and theeounterweight 2G on the vahe stein 22 will cause the valve 21 to leav.the seat 1S and thus afford a t'i'ee paseagit troni liraneh to thehonv`l y 1.3' and iilieiiee through the tube 5 and gluing ear-ling tothe deliverv duet E Valve i241 will more onto the seat 20 and thus;olor-1e. the lzraneli, 7 and prevent the piiini lioit` :melting airthrough said liraiiei; Il on the contrary, the feri'vad end ffl tli/idmire in held lowest. tl iiiiriitli ol .branch 7. will lie submergedwhiff livalve Q1 will pen the valve Seat 2O and @lose the valve seat 13.Consequenil". if. is. immaterial in what position the device is held,itjvill deliver liquid so long as there is any 1n il devia, iscompletely mitoinatic in the i both the pump ,lgeim the deliver .use andtherefore 'eway'on a long period conv nient to mamon tate-d by their 'etits forward ond,

i l i. through eide of the cont sense that as soon the andie is'i'otaed,inlet and outlet valves will be positively moved to proper position andwill connnenee to deliver lifnndI Furthermore, the deli'v'ery of liquidwill continue no long :in there any liquid left. poeitive and does notgas prenante from within the device. As a result of the lasl mentionedcharacteristic, it unnecessary to maintain any pressure withii'i thedevice when not. in lthe device may be stored without any dangerunknown, slow has ness. My device iS toi' it. may be readily held in thelefthand of the user Whileithe latter n i, bis right hand to rotate. thecrank handle. it. will understood. however, that the of the casing isnot an essential' characteristic and that devices having much largercaeings or containers may' be used.

Having: thus described my invention, what 'Y 'new and les-ire to secureby Let l. .A ire hor having; container for fire extinguiehinh" iiquiaiiii the forni of a cylinder capable of being grasped in the lef?, handof the op ator, and passing thence onder the left arm of the operai-.orwhereby thogdevice may be steadied, said container .haring a dischargeopening at. the forward end, a pump at the forward end of' saidcontainer, la. crank located near the foi'vard end of .said conainer'for operating seid pump, eaid cra-nl: being located at the side of thecontainer in r bition to "be conveniently ro- Dh. hand of the operator.

ixe extinguisher having n. cylindrical container oa diainef-eri4convenient for be.-

v:Ele-gend upon of finding that an etre-Jed itsl ,oper

ing grasped in the left hand of the operator,

container having a. discharge pening' pump neartlief forward "end ofsaid container for forcing liquid` out. said disoharge` opening, a shaftpartially Within Said container` for operai.- ingf Seid pump, id haftextending to one "r, and a crank secured to of the container for Saidshaftai the ci ro'fii'ing n, saisi ci Jil;

Sition to oe ,grasgkped b when the shaft lies i al ond with its outer tole rotor, said pump be.- "d deliver monaci out through opening andclosing the disoiarge opening, under the conditions specified, when thecrank is rotated in a clockwise direction.

.in a fire eXt-inguisner, Lion of cli'lindricial charge opening, a

the combinacasing having a disiiousing within the casing deliering intoSaid opening,t\vo tubular Sections, t 'nner of each Sectioncommunicating with the interior of said housing, the outer end oi onenear one cri said casing having a discharge opening at one end, twosections of tubing Within the easing each section communicating at Vits.inner end with the diecharge'opening of the casing; am, being provi edat said inner end with. n. valc Seat, th-v entcr ends of said sectionsof tubing; having reci 'ving mouths locati. 'te ends of the casing,

d near the opposi a valve automatically seating upon said valve sente inthe sections of tubing inenioned, means for causing Said valve to Seat.upon the Section temporarily uppermost, and gravity operated means formaintaining the receiving months of said sect-ions of tubing downwardsubstantially as described.

`5. ln a lire extinguisher, the combination f ace xg having a dischargeopening, a valve t controlling Said opening, a pump for forcing liquidthrough said valve seat, a. shaft for operating Said pump, said Shaftbeing shiftable in an axial direction for Y, said valve seat, saidsha-it being` normally in closed position, and automatic means forShifting said shaft to onen poeition when rotated from normal position.

6. ln a fire' extinguisher, the combination of acasing 'having adischarge opening, a valve searcontrolling said opening, a. pump forforcing liquid through said valve seat, a shaft for operating said pump,said Shaft being shiftable in an opening and closing said valveseat,said `sooft being normally in closedposition, a

section being located 7 axial direction for rotatiQn of said shaft,- andcam mechanism for shifting said shaft when rotated from normal position.

8. In a fire extinguisher, a. casing having a discharge opening, a pumpdelivering into said discharge opening, a crank forl operating saidpump, a vent valve for permitting air to enter the casing, and cammechanism operated by said crank for controlling said valve.

9. A fire extinguisher comprising a casing, a pump Within said casing, adelivery duct leading from said pump, a rotatable shaft for operatingsaid pump, said shaft being longitudinally movable to control the flowthrough Said duct, said shaft being normally in closed position toprevent the passage through said duct, cam mechanism secured to saidshaft for moving it lengthwise,'

a vent valve for admitting air to said casing,

and means operated by said shaft for automatically controlling said ventvalve.

l0. A re extinguisher comprising a casing, a pump within said casing, adelivery duct leading from said pump, a crank for operating said pump, avent valve'for permitting air to enter the casing, said valve beingnormally closed, a cam operated by said crank, said cam being rotatableto and from normal position, and `connections between said valve andsaid cam for opening said vent when said cam is rotated from normalposition.

In Witness whereof, I Vhave hereunto subscribed my name in the presenceof two Witnesses. l

l THEODORE M. DUNLAP. IVitnesses:

HOWARD M. Cox, KATHRYN S. READY. c

